Improvement in stove-grates



o. STUART 8; L, BRIDGE.

Stove-Grates.

Patented Dec. 2,1873 E61,

UNITED STATES. PATENT OFFICE.

DAVID STUART AND LEWIS BRIDGE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO STUART, PETERSON & 00., OF SAME PLACE.

IMPROVEMENT IN STOVE-GRATES.

Specification forming part of Letters Patent No. 145,253, dated December 2, 1873; application filed June 28, 1873.

To all whom it may concern:

Be it known that we, DAVID STUART and LEWIS BRIDGE, both of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Fire-Places for Ranges and Cooking-Stoves, of which the following is a specification:

' The main objects of our invention are to readily and effectually remove accumulated ashes from the fire-places of cooking-stoves and ranges, and to enable the exposed parts of the latter, when burned out, to be readily removed and replaced, the main features of our invention being the two circular grates A and A, and the front grate, consisting of the upper fixed portion B and lower movable portion B-the circular grates (shown in the plan view, Figure 1, of the accompanying drawing) being so connected together that by operatlng one handle both can be agitated simultaneously, or tilted simultaneously, while the lower portion, B, of the front grate (best observed in the vertical section, Fig. 2) is so hinged to the stove that it can be turned outward and downward, thereby permitting the ashes to escape into the hearth.

The fire-place is of the usual oblong. shape common to all cooking-stoves, and is furnished with two circular grates, A and A, each grate having a central cylindrical bar, adapted to a socket, b, formed at the upper end of a pin, D, which can turn freely in, and which, together with the grate, is supported by, a bar, E, projecting from the rear, f, of the fire-place, as shown in Fig. 2. Each grate can be tilted on its socket b, and can be vibrated with the pin D, of which the socket forms a part. A square or other suitably-shaped projection, m, on the edge of one grate .is so adapted to a socket, a, on the edge of the other grate that the movements of one grate must be simultaneous with those of the other; hence, on turning the projection e on the grate A, both grates will be tilted together, and on vibrating the projection both grates will be agitated simultaneously.

In order to limit the vibration of the grates, and thereby prevent them from being disconnected, we make use of a cross-bar, Gr, having a depression, as shown in the detached view, Fig. 5, and the opposite ends of this depression limit the vibrating movements of the grate by arresting the projection m.

The cross-bar Gr, the pins D, with their sockets, and the grates A and A, are all detachable from each other and the stove, and can be readily removed when worn or burned out, and as readily replaced by new pieces.

The front grates of cooking stoves and ranges are usually cast in one piece, so that the removal of the ashes from behind them into the hearth must be accomplished by the aid of a poker inserted between the bars.

We make the front grate in two parts, B and B, (shown in the perspective view, Mg. 4,) the upper part being permanently secured to the stove, and the lower portion having 'trunnions a0 90, adapted to bearings in the side plates y y of the fire-place, as shown in Fig. 1, so that on moving the retaining device 2', l ig. 4, to one side, and thereby releasing the lower portion B of the grate, it will fall to the position shown by dotted lines in Fig. 2, the fuel being consequently exposed, so that the ashes will fall into the receptacle of the hearth H.

By thus constructing the front grate in two parts we are also enabled to replace the upper and most exposed portion when it becomes burned out Without discarding the lower hinged portion; and the warping and cracking which frequently occurs in grates made in one piece, owing to unequal contraction and expansion, is avoided.

We claim as our invention- 1. The grates A A, arranged upon the same plane, and connected together by a projection on one fitted to a recess in the other, so that the movement of one will impart a simultaneous movement to the other, substantially as described.

2. The arm E, carrying a vertical pin, D to a socket of which is adapted the bar a of a revolving and tilting grate, substantially as described.

3. The within'described stove-grate, consisting of three sectionsthat is to szty, the upnames to this specification in the presence of per, vertical, and permanent section B, the two subscribing Witnesses.

intermediate hinged section B, and the horizontal section for supporting the body of fuel when the intermediate section is depressed all being combined as set forth for the purpose specified.

In testimony whereof we have signed our DAVID STUART. LEWIS BRIDGE.

Witnesses:

WM. A. STEEL, HUBER'I HOWSON. 

